Mitsubishi Electric ME96SSEB-MB User manual

Electronic Multi-Measuring Instrument

MODEL

ME96SSEB-MB

User's Manual: Detailed Edition

●Before use, you should read this user’s manual carefully

to properly use this instrument.

Be sure to forward the manual to the end user.

1

Check your delivery

The following table shows a list of the instrument accessories.

When unpacking your package, check all the contents.

Contents

Quantity

Specification

User’s Manual

(Digest version)

1

A3 size

Attachment lug

(with a screw)

2

Optional plug-in module

The optional plug-in modules cannot be attached to this product.

If you need a function such as analog output, CC-Link communication, digital input/output, MODBUS TCP

communication, or logging function, use other model, ME96SSHB-MB or ME96SSRB-MB which can be

combined with the optional plug-in modules.

2

Features

⚫ The instrument measures load status by wiring the secondary sides of VT (Voltage Transformer) and CT

(Current Transformer) in the power receiving and distribution system and displays various measured values.

⚫ The instrument supports Active Energy Class 0.5S.

⚫ The password protection prevents undesired setting change and measured data deletion.

⚫ The transmission function, MODBUS RTU communication, transmits measured data to superior monitoring

systems.

⚫ The instrument fulfills the requirements of the CE marking, UL standards, KC mark, and FCC/IC.

⚫ The support function for checking input wiring enables to determine the wiring condition in the test mode.

When either a voltage input or current input is incorrectly wired, the incorrect wiring part is displayed on the

screen and it also shows a current phase angle, a voltage phase angle, and each value of active power,

voltage, and current.

Trademark

MODBUS is a trademark of Schneider Electric USA Inc.

Other company and product names herein are trademarks or registered trademarks of their respective owners.

In the text, trademark symbols such as ‘TM’ and ‘®’ may not be written.

3 
Table of Contents          
 
Check your delivery ................................................................................................................................................. 1 
Optional plug-in module ........................................................................................................................................... 1 
Features ................................................................................................................................................................... 2 
Trademark ............................................................................................................................................................... 2 
Table of Contents .................................................................................................................................................... 3 
Safety Precautions ................................................................................................................................................... 5 
EMC Directive Instruction ........................................................................................................................................ 9 
Precautions for KC mark.......................................................................................................................................... 9 
Table for measuring element code ........................................................................................................................ 10 
1.  Name and Function of Each Section ................................................................................................................ 11 
  Name of Each Part ................................................................................................................................. 11 
  LCD Function .......................................................................................................................................... 12 
  Function of Operation Buttons ................................................................................................................ 13 
2.  Each Mode Function ......................................................................................................................................... 15 
3.  How to Set up ................................................................................................................................................... 16 
  Setting Flow ............................................................................................................................................ 16 
  Setting Menu 1: Basic Setup (Settings for Phase Wire System, Display Pattern, VT/Direct Voltage, and 
CT Primary Current) ............................................................................................................................... 19 
  Setting Menu 2: Communication Settings (MODBUS
 
RTU Communication Settings) .......................... 23 
  Setting Menu 3: Display Settings (Settings for Display of Active/Reactive Energy and Harmonic 
Measurement) ........................................................................................................................................ 24 
  Setting Menu 4: LCD Settings (Settings for Model Display, Version Display, Backlight, and Update 
Time) ....................................................................................................................................................... 25 
  Setting Menu 5: Alarm Settings (Settings for Upper/Lower Limit Alarm and Motor Starting Current 
Mask Function) ....................................................................................................................................... 26 
  Setting Menu 6: No Settings ................................................................................................................... 29 
  Setting Menu 7: No Settings ................................................................................................................... 29 
  Setting Menu 8: Special Settings (Settings for Operating Time and IEC Mode) .................................... 30 
  Setting Confirmation Menu 1 to 9: How to Confirm the Settings in the Setting Menu 1 to 8, 9 Test Mode 
   ............................................................................................................................................................ 32 
  Initialization of Related Items by Changing a Setting ............................................................................. 33 
  Initialization of All Settings ...................................................................................................................... 33 
  Settings for Special Display Pattern P00 ................................................................................................ 34 
  Example for Easy Setup ......................................................................................................................... 36 
4.  How to Use Test Mode ..................................................................................................................................... 38 
  Test Menu 1: Communication Test ........................................................................................................ 39 
  Test Menu 2 to 5: No Test Menu ............................................................................................................ 40 
  Test Menu 6: Functions for Determining Incorrect Wiring ...................................................................... 40 
4.3.1.  Incorrect Wiring Patterns Detected by ①Pattern display of incorrect wiring .................................. 43 
5.  Operation .......................................................................................................................................................... 46 
  Basic Operation ...................................................................................................................................... 46 
5.1.1.  How to Switch the Measurement Screen ........................................................................................ 46 
5.1.2.  How to Switch Phase Display ......................................................................................................... 46 
5.1.3.  How to Display in Cyclic Mode ....................................................................................................... 47 
5.1.4.  Harmonics Display .......................................................................................................................... 47 
5.1.5.  Maximum/Minimum Value Display .................................................................................................. 48 
5.1.6.  How to Display Maximum/Minimum values .................................................................................... 48 
5.1.7.  How to Clear the Maximum/Minimum Values ................................................................................. 48 
5.1.8.  Active Energy/Reactive Energy/Apparent Energy Display ............................................................. 49 
5.1.9.  How to Change the Display Digit of Active/Reactive/Apparent Energy .......................................... 49 
5.1.10.  How to Reset Active/Reactive/Apparent Energy to Zero ................................................................ 50 
5.1.11.  How to Measure Reactive Energy (2 quadrant/4 quadrant measurement） ................................... 50 
5.1.12.  Each Measuring Item Display during Power Transmission ............................................................ 51 
5.1.13.  Demand Time Period and Demand Value of Current demand ....................................................... 51 
   

4 
Table of Contents          
 
  Usage Depending on the Application (Alarm, Operating Time, Password, etc.) ................................... 52 
5.2.1.  Upper/Lower Limit Alarm Display and Action ................................................................................. 52 
5.2.2.  How to Cancel the Upper/Lower Limit Alarm .................................................................................. 53 
5.2.3.  How to Stop Backlight Blinking Caused by the Upper/Lower Limit Alarm ...................................... 53 
5.2.4.  Operating Time Display .................................................................................................................. 53 
5.2.5.  How to Reset Operating Time to Zero ............................................................................................ 53 
5.2.6.  How to Prevent the Maximum Value Update by Motor Starting Current ........................................ 54 
5.2.7.  Password Protection Setting ........................................................................................................... 54 
6.  Others ............................................................................................................................................................... 55 
  Display Pattern List ................................................................................................................................. 55 
  Standard Value ....................................................................................................................................... 57 
  Measuring Item ....................................................................................................................................... 59 
  Instrument Operation .............................................................................................................................. 61 
  Troubleshooting ...................................................................................................................................... 62 
7.  Installation ......................................................................................................................................................... 63 
  Dimensions ............................................................................................................................................. 63 
  How to Install .......................................................................................................................................... 64 
7.2.1.  Mounting Hole Dimensions ............................................................................................................. 64 
7.2.2.  Mounting Position ........................................................................................................................... 64 
7.2.3.  Mounting and Fixing........................................................................................................................ 64 
  How to Connect Wiring ........................................................................................................................... 65 
7.3.1.  Specifications on the Applicable Electrical Wire ............................................................................. 65 
7.3.2.  Wiring of the Unit ............................................................................................................................ 65 
7.3.3.  Check the connection ..................................................................................................................... 65 
  Wiring Diagram ....................................................................................................................................... 67 
8.  Specifications.................................................................................................................................................... 72 
  Product Specifications ............................................................................................................................ 72 
  Compatible Standards ............................................................................................................................ 73 
  MODBUS RTU Communication Specifications ...................................................................................... 73 
  Setting Table (Factory Default Settings and Customer’s Notes Settings) ............................................. 74 
9.  Appendix ........................................................................................................................................................... 75 
  ME96SS Calculation Method (3-phase Unbalanced System with Neutral) ........................................... 75 
  A List of Examples for Incorrect Wiring Display ..................................................................................... 76 
9.2.1.  3-phase 4-wire System ................................................................................................................... 76 
9.2.2.  3-phase 3-wire System ................................................................................................................... 85 
9.2.3.  1-phase 3-wire System ................................................................................................................... 92 
 
 

5

Safety Precautions

Before use, read these instructions carefully to properly operate the instrument.

Be sure to follow the precautions described here for personnel and product safety.

Keep this manual ready to hand and accessible for future use at all times.

Be sure to forward the manual to the end user.

If you consider using the instrument for a special purpose such as nuclear power plants, aerospace, medical

care, or passenger vehicles, consult with our sales representative.

The instructional icon in the manual is described as follows.

The caution icon ( ) on the main unit indicates that incorrect handling may cause

hazardous conditions. Always follow the subsequent instructions ( ) because

they are important to personal safety. Failure to follow them may result in an

electric shock, a fire, erroneous operation, or damage to the instrument. If the

instrument is used in a manner not specified by the manufacturer, the protection

provided by the instrument may be impaired.

CAUTION

The terminals of auxiliary power (MA, MB) and voltage input (P1, P2, P3, PN) have

hazards of electric shock, explosion, or arc flash. Turn off the power supply of auxiliary

power and input circuit and then handle the instrument.

■Precautions on use environment and conditions

Do not use the instrument in the following circumstances:

Failure to follow the instruction may cause a malfunction or reduced product life time.

⚫ The ambient temperature exceeds the range -5°C to +55°C.

⚫ The average daily temperature exceeds +35°C.

⚫ The relative humidity exceeds the range 0 to 85% RH, or condensing.

⚫ The altitude exceeds 2000 m.

⚫ Pollution Degree: more than 2 *Note 1

⚫ Exposed to much dust, corrosive gas, salty environment, or oil mist

⚫ Transient over voltage: 4000 V *Note 1

⚫ Exposed to excessive vibration or impact

⚫ Exposed to rain or water drops

⚫ Exposed to direct sunlight

⚫ Pieces of metal or inductive substances are scattered.

⚫ Exposed to strong magnetic fields or large exogenous noise

*Note1: For details about the Pollution Degree and the Transient over voltage category,

refer to EN61010-1:2010.

Grit, dust, and small insects cause poor contact or a failure such as insulation decline that caused by

deposition and moisture absorption. Furthermore, in the area where the air contains conductive dust, a

failure such as a product malfunction or insulation deterioration occurs in a relatively short time. In this

case, you must take measures against it such as putting the instrument in an enclosed board. In

addition, if the temperature inside the board rises, the measures must be undertaken as well.

CAUTION

6

Safety Precautions

■Precautions on Installation and wiring

Be sure to read the instructions carefully before installation and wiring.

CAUTION

⚫ A qualified electrician must install and wire the instrument for safety.

⚫ Supply power to the instrument after completing its assembly work on a cabinet door.

⚫ The instrument is to be mounted on the cabinet door. All connections must be kept

inside the cabinet.

⚫ The following table shows the specifications on the input/output terminal.

■Auxiliary power supply and measuring element

Auxiliary power supply

100 to 240 V AC (±15%) 50 Hz to 60 Hz

100 to 240 V DC (-30% ＋15%)

MA, MB

terminals

Measuring

element

Voltage

3-phase 4-wire: max 277 V AC/480 V AC

3-phase 3-wire: (DELTA) max 220 V AC

(STAR) max 440 V AC

1-phase 3-wire: max 220 V AC/440 V AC

1-phase 2-wire: (DELTA) max 220 V AC

(STAR) max 440 V AC

Category III

P1, P2, P3,

PN terminals

Current

5 A (CT secondary side),

max 30 V AC

Category III

+C1, C1, +C2,

C2, +C3, C3

terminals

Frequency

50 Hz or 60 Hz

The current input terminals must be connected to a CT, external equipment, with basic

insulation.

Be sure to continuously connect the terminals for voltage-measuring purpose and current-

measuring purpose during operation.

■Others

MODBUS RTU

communication

T/R+,T/R-,SG terminals

max 35 V DC

⚫ Keep the protection sheet affixed to the front of the instrument during installation and

wiring.

⚫ Do not drop the instrument from high place. If it is dropped and the display cracks, do

not touch the liquid leaking from the broken LCD or do not get it in your mouth. If you

touch the liquid, rinse it off with soapy water at once.

⚫ Do not work under live-line condition. Otherwise, an instrument failure, an electric shock,

or a fire may be caused.

⚫ When tapping or wiring, take care not to enter any foreign objects such as chips or wire

pieces into the instrument.

⚫ If you pull the wires with a strong force when connecting them to the terminals, the

terminals may come off. (Tensile load: 39.2N or less)

⚫ Check the wiring diagram carefully. Inappropriate wiring can cause a failure of the

instrument, an electric shock, or a fire.

⚫ Use appropriate size wires. The use of an inappropriate size wire can cause a fire due

to heat generation.

⚫ Use crimp-type terminals compatible with the wire size. For details, refer to 7.3.1

Specifications on the Applicable Electrical Wire. The use of an inappropriate terminal

can cause a malfunction, failure, or burnout of the instrument or a fire due to damage to

the terminal or poor contact.

⚫ Tighten the terminal screws with a specified torque and use a suitable pressure

connector. For details, refer to 7.3.1Specifications on the Applicable Electrical

Wire. Excessive tightening can cause damage to the terminals and screws.

⚫ Be sure to confirm the wiring connections strictly after the connection. Poor connection

can cause a malfunction of the instrument, an electric shock, or a fire.

⚫ In order to prevent invasion of noise, MODBUS RTU communication cables, auxiliary

power supply cables, and other signal cables must not be placed close to or bound

together with power lines or high voltage lines. When lying parallel to the power lines or

high voltage lines, refer to the following table for the separation distance. (Except the

input part of the terminal block)

Conditions

Distance

Power lines of 600 V or less

300 mm or more

Other power lines

600 mm or more

7

Safety Precautions

■Precautions on preparation before use

⚫ Observe the use conditions and environment requirements for installation place.

⚫ You must set up the instrument before use. Read the manual carefully to set it up correctly. If the setup is

incorrectly done, the instrument will not be properly operated.

⚫ Check the power rating of the instrument and then apply proper voltage.

■Precautions on how to use

⚫ When operating the instrument, check that active bare wires do not exist around it. If any bare wire exists,

stop the operation immediately and then take appropriate action such as insulation protection.

⚫ If a power outage occurs during the setup, the instrument will not be set up correctly. Set it up again after

power recovery.

CAUTION

⚫ Do not disassemble or modify the instrument to use. Otherwise, a failure, an electric

shock, or a fire can be caused.

⚫ Use the instrument within the rating specified in the manual. If you used it outside the

rating, it might cause not only a malfunction or failure of the instrument but also ignition

or burnout.

⚫ Do not open the CT secondary side while the primary current is energized. When the CT

secondary side circuit is open, the primary current flows. However, the secondary

current does not flow. Therefore, a high voltage is generated at the CT secondary side

and the temperature rises, resulting in insulation breakdown in the CT secondary

winding. It may lead to burnout.

⚫ When external equipment is connected to the external terminals, the instrument and

external equipment must not be powered and be used after the definitive assembly on

a cabinet door.

⚫ The rating of the terminal of external equipment should satisfy that of the external

terminal of the instrument.

■Precautions on maintenance

⚫ Wipe dirt off the surface with a soft dry cloth.

⚫ Do not leave a chemical cloth in contact with the instrument for a long time or do not wipe it with benzene,

thinner, or alcohol.

⚫ In order to properly use the instrument for a long time, conduct the following inspections:

(1) Daily maintenance

①No damage in the instrument

②No abnormality with LCD indicator

③No abnormal noise, smell or heat generation

(2) Periodical maintenance

Inspect the following item every six months to once a year.

①No looseness of installation and terminal block connection

CAUTION

Be sure to conduct periodic inspection under the electric outage condition. Failure to follow

the instruction may cause a failure of the instrument, an electric shock, or a fire. Tighten

the terminals regularly to prevent a fire.

■Precautions on storage

To store the instrument, turn off the power supplies of auxiliary power and input circuit, remove the wires

from the terminals, and then put them in a plastic bag.

For long-time storage, avoid the following places. Otherwise, there is danger of an instrument failure or

reduced product life time.

⚫ The ambient temperature exceeds the range -25°C to +75°C.

⚫ The average daily temperature exceeds +35°C.

⚫ The relative humidity exceeds the range 0 to 85% RH, or condensing.

⚫ Exposed to much dust, corrosive gas, salty environment, or oil mist.

⚫ Exposed to excessive vibration or impact.

⚫ Exposed to rain or water drops.

⚫ Exposed to direct sunlight.

⚫ Pieces of metal or inductive substances are scattered.

8

Safety Precautions

■Warranty

⚫ The warranty period is for one year from the date of your purchase or 18 months after the

manufacturing date, whichever is earlier.

⚫ During the warranty period, if any failure occurred in standard use that the product is used in the

condition, method, and environment followed by the conditions and precautions described in the

catalog and user’s manual, we would repair the product without charge.

⚫ Even within the warranty period, non-free repair is applied to the following cases.

① Failures caused by the customer’s improper storage, handling, carelessness, or fault.

② Failures caused by faulty workmanship

③ Failures due to faults in use or undue modification

④ Failures due to force majeure such as a fire or abnormal voltage or due to natural disasters such as

earthquakes, windstorms, or floods.

⑤ Failures caused by the problem in question that could not be predicted with the technology available

at the time the product was shipped.

⚫ Our company shall not be liable to compensate for any loss arising from events not attributable to our

company, customers’ opportunity loss or lost earnings due to failure of the product, any loss, secondary

loss, or accident caused by a special reason regardless of our company’s predictability, damage to

other products besides our products, or other operations

■Replacement cycle of product

It is recommend that you renew the product every ten years although it depends on your use condition.

The long-term use of the product may cause discoloration of the LCD or a product malfunction.

■Disposal

⚫ Treat the product properly as industrial waste.

⚫ Batteries are not used for this product.

■Packaging materials and user’s manual

For reduction of environment load, cardboard is used for packaging materials and the manual is printed

with recycled papers.

9

EMC Directive Instruction

This section summarizes the precautions to have the cabinet constructed with the instrument conform to

the EMC Directive.

However, the method of conformance to the EMC Directive and the judgment on whether or not the

cabinet conforms to the EMC Directive must be determined finally by the manufacturer.

This instrument complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) This instrument may not cause harmful interference, and (2) this instrument must accept any interference

received, including interference that may cause undesired operation.

1．EMC Standards

⚫ EN 61326-1

⚫ EN 61000-3-2

⚫ EN 61000-3-3

2．Installation (EMC directive)

The instrument is to be mounted on the panel of a cabinet.

Therefore, the installation to the cabinet is important not only for safety but also for conformance to EMC.

The instrument is examined in the following conditions.

⚫ A conductive cabinet must be used.

⚫ The conductivity of the six surfaces of the cabinet must be all ensured.

⚫ The cabinet must be grounded by thick wires for low impedance.

⚫ The hole drilling dimensions on the cabinet must be 10 cm or less in diameter.

⚫ The terminals for protective earth and functional earth must be grounded by thick wires for low impedance.

The use of the terminal for protective earth is important not only for safety but also for conformance to

EMC.

⚫ The connecting part of the terminal must be all placed inside the cabinet.

⚫ Wiring outside the cabinet must be conducted with shielded cables, and the cables must be fixed to the

panel with clamps. (Strip the covering of shielded cable by a portion of clamp installation and then mask

the grounding part of the panel and clamp so as not to be painted.)

Precautions for KC mark

■Precautionary note written in Korean

Distributors and users must understand that this product meets the electromagnetic compatibility

requirements and is designed for industrial use (Class A).

Do not use the product in a residential area.

■Applicant for KC mark : MITSUBISHI ELECTRIC AUTOMATION KOREA CO.,LTD

■Manufacturer : MITSUBISHI ELECTRIC CORPORATION

Note 1: This is the notification for the KC mark (Korea Certification)

10

Table for measuring element code

The following table shows a list of measuring element codes used in the manual.

Measuring element code

Measuring element name

A1

Current, 1-phase

A2

Current, 2-phase

A3

Current, 3-phase

AN

Current, N-phase

A

AVG

Current, average

DA1

Current demand, 1-phase

DA2

Current demand, 2-phase

DA3

Current demand, 3-phase

DAN

Current demand, N-phase

DA

AVG

Current demand, average

V12

Voltage, between 1-2 lines

V23

Voltage, between 2-3 lines

V31

Voltage, between 3-1 lines

V

AVG

（L-L）

Voltage, average, line to line

V1N

Voltage,1N-phase

V2N

Voltage, 2N-phase

V3N

Voltage, 3N-phase

V

AVG

（L-N）

Voltage, average, line to neutral

W1

Active power, 1-phase

W2

Active power, 2-phase

W3

Active power, 3-phase

ΣW

Active power, total

var1

Reactive power, 1-phase

var2

Reactive power, 2-phase

var3

Reactive power, 3-phase

Σvar

Reactive power, total

VA1

Apparent power, 1-phase

VA2

Apparent power, 2-phase

VA3

Apparent power, 3-phase

ΣVA

Apparent power, total

PF1

Power factor, 1-phase

PF2

Power factor, 2-phase

PF3

Power factor, 3-phase

ΣPF

Power factor, total

Hz

Frequency

Wh

Active energy

varh

Reactive energy

VAh

Apparent energy

HI

Harmonic current

HI

N

Harmonic current, N-phase

HV

Harmonic voltage

THD

i

Harmonic current total distortion ratio

THD

v

Harmonic voltage total distortion ratio

11

1. Name and Function of Each Section

Name of Each Part

■The front of the unit

■The back of the unit

Operation buttons

*For details, refer to

1.3 Function of

Operation Buttons.

LCD with backlight

Current Input terminals

+C1, C1: Circuit current is input.

+C2, C2: Circuit current is input.

+C3, C3: Circuit current is input

Voltage Input terminals

P1, P2, P3, PN (P1, NC, P3, P2): Circuit voltage is input.

Terminal covers

Auxiliary power input terminals

MA, MB: Auxiliary power is connected.

: Ground terminal (Ground resistance: 100 Ω or less)

MODBUS RTU communication terminals

T/R+: MODBUS RTU communication terminal

T/R-: MODBUS RTU communication terminal

SG: MODBUS RTU signal ground terminal

SLD: Shielded wire terminal (Ground resistance: 100 Ω or less)

12

1. Name and Function of Each Section

LCD Function

Note: The above display is an example for explanation.

No.

Name of each part

Function

1

LEAD display

Light up on the reactive energy (imported lead)/ (exported lead) screen.

2

LAG display

Light up on the reactive energy (imported lag)/ (exported lag) screen.

3

Digital element display

Display measuring elements expressed in digital numbers

4

Digital display

Display measured values in digital numbers

5

Unit

Display the units of measured values

6

Setup status

Light up in the setting mode

Blink in the setting confirmation mode

7

Test mode status

Light up in the test mode

8

Clock status

Light up when operating time is displayed

9

Upper/lower limit alarm

status

Blink when the upper/lower limit alarm is generating

10

Communication status

Specification

ON

Blink

OFF

MODBUS RTU

communication

Normal

Communication error

such as wrong

address *1

Hardware

error

*1. For details, refer to 6.5 Troubleshooting.

11

Harmonics

Light up when harmonic is displayed

12

Metering status

Blink when imported active energy is measured *Note 1

*It appears on the active energy (imported) screen only.

Note 1: The blinking cycle is constant regardless of measuring input size.

5

4

9

6

7

1

2

12

11

10

8

3

13

1. Name and Function of Each Section

Function of Operation Buttons

The function of each operation button varies

depending on how to press the button.

○: Press, □: Press for 1 second or more, ◎: Press for 2 seconds or more, ―― : Press simultaneously

Operation

Mode

Button name

Function

SET

－

＋

RESET

MAX/MIN

PHASE

DISPLAY

Operating mode

Display switching

○

Switch the measurement screen.

○

Switch the measurement screen in the reverse direction.

○

Switch phase display.

Switch between the harmonic RMS value and distortion ratio

on the harmonics display screen.

○

Enter/Exit the Max/Min value screen.

◎

Enter the cyclic display mode for measurement screen. Refer

to 5.1.3.

◎

Enter the cyclic display mode for phase. Refer to 5.1.3.

Switch between the harmonic RMS value and distortion ratio

in cyclic mode on the harmonics display screen.

◎

Change the units such as Wh, varh, and VAh or display the

lower-digit enlarged view. Refer to 5.1.9.

Measured value clearness/

Alarm reset

◎

Clear the maximum and minimum

values displayed on the screen.

They are available

on the Max/Min

value screen.

◎

Clear maximum and minimum values

for every item in every screen.

◎

Reset Wh, varh, and VAh to zero.

All measured values are reset to zero simultaneously.

◎

Reset operating time to zero.

(The operating time displayed on the screen only)

○

Reset the alarm displayed on the

screen.

They are available

only when set to

manual alarm

cancellation.

◎

Reset all alarms at once.

(For every item in every screen)

○

Stop the backlight blinking caused by alarm only when set to

backlight blinking.

Mode switch

◎

Enter the setting mode.

◎

Enter the setting confirmation mode.

◎

Enter the password protection screen.

Setting mode/

Setting confirmation mode

Setting operation

○

Determine the settings and then shift to the next settings.

○

Return to the previous setting item.

○

□

○

□

Round up/down the setting value.

Pressing for 1 second or more enables fast forward.

□

Skip the settings and return to the setting menu screen.

○

Reflect the setting change on the END screen.

○

Cancel the setting change on the CANCEL screen.

Special

operation

□

Restart the instrument on the CANCEL screen.

◎

Initialize to the factory default settings on the CANCEL

screen. Refer to 3.12.

Note: During backlight off mode, pressing any operation button first turns on the backlight. In addition, pressing any button

again enables the use of the functions in the above table.

SET －＋ RESET MAX/MIN PHASE DISPLAY

SET button RESET button Phase button

+/- button MAX/MIN button DISPLAY button

14

1. Name and Function of Each Section

1.3. Function of Operation Buttons

CAUTION

⚫ When you execute a function such as ‘Reset Max/Min value’ or ‘Reset Wh, varh, and

VAh to zero’, past data is deleted. If you need to keep the data, record the data before

the reset operation.

⚫ When you execute ‘Restart the instrument’, the entire measurement function

(measurement display, communication) will stop for a few seconds.

15

2. Each Mode Function

The instrument has the following operation modes.

When auxiliary power is supplied, the operating mode is first displayed.

Depending on the application, switch the operation mode to use.

Mode

Description

Reference

Operating

mode

This is a normal operation mode to display each measured value in digital

numerical number. In the operating mode, there are ‘Present value display’ that

shows values at present and ‘Max/Min value display’ that shows maximum and

minimum values in the past.

In addition, on each display screen, the cyclic display mode, which

automatically switches the display screen every 5 seconds, is available.

5 Operation

Setting

mode

This is a mode where you can change the settings for measurement function.

In addition, on the CANCEL screen, which is the screen to cancel the setting

change, the following special operations are available.

・ Restart the instrument.

・ Reset the settings to the factory default.

3 How to

Set up

Setting

confirmation

mode

(Test mode)

This is a mode where you can confirm the setting of each item.

In this mode, you cannot change the settings. Therefore, it is possible to

prevent from accidentally changing the settings.

The mode provides test function available at startup of systems.

・ Communication Test: Without measurement input (voltage/current), fixed

numerical data can be returned.

・ Support function for checking input wiring:

When either a voltage input or current input is

incorrectly wired, the incorrect wiring part is displayed

on the screen. In addition, useful information is also

displayed such as a current phase angle and voltage

phase angle.

3.10 or 4

How to Use

Test Mode

■Flow of each mode

SET

＋

－

Operating mode

Present value

display

Max/Min value

display

Setting mode

Setting

confirmation mode

Test mode

SET

RESET

End screen

CANCEL

screen

＋

Save the

settings

Cancel the

settings

Press for 2 seconds simultaneously.

When you

select “End”

in the menu

When you select

“End” in the menu

Press for 2 seconds

ON

Blink

16

3. How to Set up

Setting Flow

For measurement, you must set settings such as phase wire system, VT/Direct voltage, and CT primary current

in the setting mode.

From the operating mode, enter the setting mode and then set necessary items. Any items not set remain in the

factory default settings.

For normal use, only set up the items in the setting menu 1. For details on the settings, refer to 3.2.

For details on the factory default settings, refer to 8.4.

CAUTION

The setting change provides the initialization of the related setting items and

measured data. Therefore, check that beforehand. For details, refer to 3.11

Initialization of Related Items by Changing a Setting.

Measurement

screen

Setting Menu End

End screen

CANCEL

screen

Automatic shift

Demand

current

time period

CT current

VT/Direct

voltage

Display

pattern

Phase wire

system

Setting Menu 1

Setting Menu 2

Setting Menu 3

Cancel the

settings

Save the

settings

Instrument restart

or

Factory default

settings

*2

*1

Password protection

screen

Example of

Setting Mode

Example of Setting

Confirmation Mode

Active/Reactive

energy

measurement

Harmonics

display

Change

the

password

MODBUS

RTU

Address

MODBUS

RTU

Parity

MODBUS

RTU

Stop bit

MODBUS

RTU

Baud rate

Operating Mode

ON

Blink

17

3. How to Set up

3.1. Setting Flow

(1) Press the and buttons simultaneously for 2 seconds to enter the setting mode.

(2) Select the setting menu number with the or button.

(3) Press the button to determine the setting menu number.

(4) Set each setting item. (Refer to 3.2 to 3.9.)

(5) After completing all the settings, select End in the setting menu and then press the button.

(6) When the End screen appears, press the button again.

SET

＋

－

SET

RESET

SET

non

Upper/Lower

limit alarm

value

Alarm

delay time

Alarm

reset

method

Backlight

blinking

for alarm

Motor starting

current

delay time

Upper/Lower

limit alarm

item

Model

display

Version

display

Backlight

brightness

Backlight

Auto off

/ON

Display

update

time

Operating

time

Threshold

Operating

time

Count target

Operating

time

Display

Setting Confirmation

Menu 9

Setting Menu 4

Setting Menu 5

Setting Menu 6

Setting Menu 7

Setting Menu 8

Setting Menu or Setting Confirmation Mode

Arrow

mark

Action

Button operation

Enter the setting mode from the operating

mode.

＋

Press simultaneously

Enter the setting confirmation mode from

the operating mode.

Press for 2 seconds.

Select the menu number to set up or End.

or

Press several times.

Enter the setting screen. Shift to the next

setting item.

Press

Return to the previous setting item.

Press

Omitted

Select a set value.

or

Press several times.

Shift to the End screen.

Press

Save the settings and then return to the

operating mode.

Press

Select CANCEL.

or

Press

Cancel the settings.

Press

Skip the current settings during setup.

Press for 1 second

Reset the settings to the factory default

settings.

＋

Press for 2 seconds

Enter the password protection screen from

the operating mode.

＋

Press for 2 seconds

DISPLAY

RESET

＋

－

SET

PHASE

RESET

SET

＋

－

SET

*1: If you enable password protection, you need

to input the password to enter the setting

mode from the operating mode.

*2: In the setting confirmation mode, the screen

returns to the operating mode.

*3: This is not displayed in the setting mode.

Test Mode

*3

PHASE

RESET

＋

－

IEC mode

settings

*3

Automatic

shift

non

Automatic

shift

18

3. How to Set up

3.1. Setting Flow

■Basic operation for settings

The following table shows a list of basic operations for settings.

Function

Operation

Note

Select a setting

Press or button

Fast-forward by pressing for 1 second or

more

Determine a setting

Press button

When the setting is determined, the

screen will shift to the next setting item.

Return to the previous setting

item

Press button

The setting before return is enabled.

Return to the setting menu

during setup

Press button for 1 second

＋

－

SET

DISPLAY

SET

19

3. How to Set up

Setting Menu 1: Basic Setup (Settings for Phase Wire System, Display Pattern,

VT/Direct Voltage, and CT Primary Current)

You will set the phase wire system, display pattern, VT/Direct voltage, CT primary current, and demand time

period.

In the operating mode, press the and buttons simultaneously for 2 seconds or more to enter the

following operation.

SET

RESET

SET

DISPLAY

Set the display pattern.

The following table shows measuring elements displayed on

each display pattern. The measuring elements displayed on P01

and P02 are the same. For P01, four elements are displayed in

one screen. For P02, each phase is displayed in one screen. For

details, refer to 6.1.

P00 is a special display pattern to freely set display items. For

details on the settings, refer to 3.13.

○：Displayable only by this setting

△：Other additional settings are necessary to display.

□：Select ‘P00’ and set up the display order and position.

1) When set to 3-phase 4-wire system

Display Pattern

Current

Current N-phase

Current Demand

Current demand N-phase

Voltage

Active Power

Reactive Power

Apparent Power

Power Factor

Frequency

Active Energy (Imported)

Reactive Energy

Apparent Energy

Additional Screen

*Note

Active Energy

(Imported/Exported)

Reactive Energy

Harmonic

Current/Voltage

Operating Time

P01

○

△

P02

○

△

P00

□

△

Continued to the next page.

②Display Pattern

<When 1-phase 2-wire is set at

①Phase wire system.>

P02 is not selectable.

P01

P02

P00

Set the phase wire system

according to the measurement target circuit.

①Phase wire system

3P4: 3-phase 4-wire

3P3. 2CT: 3-phase 3-wire（2CT）

3P3. 3CT: 3-phase 3-wire（3CT）

1P3. 1N2: 1-phase 3-wire（1N2 display）

1P3. 1N3: 1-phase 3-wire（1N3 display）

1P2: 1-phase 2-wire

Note: The underlined

shows the default

setting.

(The same as below)

Select 1 in the setting menu.

*Refer to the right figure.

Setting Menu

SET

DISPLAY

SET

DISPLAY

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Mitsubishi Electric ME96SSEB-MB User manual

Mitsubishi Electric ME96SSEB-MB User manual

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